Data transfer speed up to 5 Gbps Compatible with USB 1.0/1.1/2.0 devices. Compatible with Windows 7. It is necessary to install the driver provided with the package (or download it from our website)regardless of the Windows version. Features: Backwards compatible with USB 1.0/1.1/2.0 Supports PCI Specification 16x 32x. (Not PCI-E) Supports USB data transfer rate of 1.5/12/480/5000 Mbps. Expands one external USB3.0 Super-Speed ports on the system. Driver supports for Microsoft Windows 2000 XP Vista and 7 operating system.